Document Detail

Effect of the dynamic response of transducer-tubing system on accuracy of direct blood pressure measurement in patients.
MedLine Citation:
PMID:  6822075     Owner:  NLM     Status:  MEDLINE    
The dynamic responses of 3 transducer-tubing systems (TTS) were documented using square and sine wave generators. The TTS tested were P23 ID with 5 feet tubing (P23-5'), P23 ID with 6 inches tubing (P23-6") and P50A transducer with no tubing (P50). Natural frequencies were 45, 33, and 7 Hz for P50, P23-6", and P23-5', respectively. All were underdamped (damping coefficients 0.1-0.3). Simultaneous measurements of blood pressures by the 3 TTS revealed that systolic pressures recorded by P23-5' were significantly higher (p less than 0.001) than by P23-6" (17%) and P50 (16%). This difference was not influenced by the size of the arterial cannula or by the heart rate. However, the differences were greater with radial, compared to brachial arterial cannulation (p less than 0.02). There were no differences in systolic pressures measured with P23-6" and P50. There were no differences in diastolic or electronic mean pressures recorded by the 3 TTS.
A Boutros; S Albert
Related Documents :
15850685 - A two-step scenario for hearing assessment with otoacoustic emissions at compensated mi...
16999145 - Intraoperative identification and effective "blood patch" prevention of persistent air ...
2009805 - Reversible cardiogenic shock due to chest tube compression of the right ventricle.
21150585 - Chest wall mechanics and abdominal pressure during general anaesthesia in normal and ob...
9783295 - The effects of nitrous oxide on pediatric dental patients sedated with chloral hydrate ...
15798245 - Electrical bioimpedance readings increase with higher pressure applied to the measuring...
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Critical care medicine     Volume:  11     ISSN:  0090-3493     ISO Abbreviation:  Crit. Care Med.     Publication Date:  1983 Feb 
Date Detail:
Created Date:  1983-03-24     Completed Date:  1983-03-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0355501     Medline TA:  Crit Care Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  124-7     Citation Subset:  AIM; IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Blood Pressure Determination / instrumentation*
Middle Aged

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Emergency cricothyroidotomy in the patient with massive neck swelling. Part 2: Clinical aspects.
Next Document:  Postoperative management of a severely anemic Jehovah's Witness.